Algérie (3) Employment (2) Altitudes (2) Wealth (2) Plants (2) North (The word) (2) Calcareous soils (2) Annuals (Plants) (2) Alkali metals (2) Inventories (2) Inventories (2) Soils (2) Occupations (2) Existencias (2) Metales alcalinos (2) Suelos (2) Trabajo (2) Travail (2) Pédologie (2) Matière organique (2) Altitudes (2) Nord (point cardinal) (2) Métaux alcalins (2) Plantes annuelles (2) Familles (2) Richesse (2) Inventaires (2) Sud (point cardinal) (2) Travail (2) Sols calcaires (2)